Hi,
Is anyone familiar with the 9 pin miniature 6RP22 vacuum tube? I couldn't find any specs for this tube, online. The ones I have were manufactured in Japan for Sylvania/ GTE. Were they used in Sears sets ?
Ed

Thank you jr,
That's just what I was looking for.
Last week an ARF member gave me a Motorola 17K1BA set. As my son and I were about to load up the set he asked me if I would take some old tv tubes he no longer needed. I thought it was a small box of series string tubes. It ended up being probably over 500 NOS tubes in over 6 boxes. Mainly 60's and 70's types.
Ed

About 15 years ago, I was at an old radio meet or a hamfest, and someone who sells tubes had loads of these tubes, Sears branded (or they may have been 6R-SP22). The dealer had no idea what they were for.
I looked at the tubes closely, noting the shapes and spacing of the grids, and told him I thought the tube might be similar to the 6CL6 (broadband power pentode), but by no means necessarily the same base as a 6CL6.